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| single channel simplex | |||
| single-channel simplex | |||
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单 路单工 : 10 phrases in 7 subjects |
| Compressors | 1 |
| Corporate governance | 1 |
| Electronics | 1 |
| Information technology | 2 |
| Scientific | 1 |
| Technology | 3 |
| Telecommunications | 1 |
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